Sony MDS-JD320 MNT0 FOK, MNT1 Shck, MNT2 Xbusy, MNT3 Sloc, Srdt, Sens, Xrst, Sqsy, Dqsy, Recp

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•IC121 Digital Signal Processor, Digital Servo Signal Processor, EFM/ACIRC Encoder/Decoder, Shock-proof Memory Controller, ATRAC Encoder/Decoder, 2M Bit DRAM (CXD2650R or CXD2652AR)

Pin No.

Pin Name

I/O

 

 

 

 

Function

 

 

 

 

 

1

MNT0 (FOK)

O

 

FOK signal output to the system control

 

“H” is output when focus is on

 

 

 

 

 

 

 

 

 

 

 

2

MNT1 (SHCK)

O

 

Track jump detection signal output to the system control

 

 

 

 

 

3

MNT2 (XBUSY)

O

 

Monitor 2 output to the system control

 

 

 

 

 

4

MNT3 (SLOC)

O

 

Monitor 3 output to the system control

 

 

 

 

 

5

SWDT

I

 

Writing data signal input from the system control

 

 

 

 

 

6

SCLK

I (S)

 

Serial clock signal input from the system control

 

 

 

 

 

7

XLAT

I (S)

 

Serial latch signal input from the system control

 

 

 

 

 

8

SRDT

O (3)

 

Reading data signal output to the system control

 

 

 

 

 

9

SENS

O (3)

 

Internal status (SENSE) output to the system control

 

 

 

 

 

10

XRST

I (S)

 

Reset signal input from the system control “L”: Reset

 

 

 

 

 

11

SQSY

O

 

Subcode Q sync (SCOR) output to the system control

 

“L” is output every 13.3 msec. Almost all, “H” is output

 

 

 

 

 

 

 

 

 

12

DQSY

O

 

Digital In U-bit CD format subcode Q sync (SCOR) output to the system control

 

“L” is output every 13.3 msec

Almost all, “H” is output

 

 

 

 

 

 

 

 

 

13

RECP

I

 

Laser power switching input from the system control “H”: Recording, “L”: Playback

 

 

 

 

 

14

XINT

O

 

Interrupt status output to the system control

 

 

 

 

 

15

TX

I

 

Recording data output enable input from the system control

 

 

 

 

 

16

OSCI

I

 

System clock input (512Fs=22.5792 MHz)

 

 

 

 

 

17

OSCO

O

 

System clock output (512Fs=22.5792 MHz) (Not used)

 

 

 

 

 

 

18

XTSL

I

 

System clock frequency setting

“L”: 45.1584 MHz, “H”: 22.5792 MHz (Fixed at “H”)

 

 

 

 

 

 

19

DVDD

—

 

+3V power supply (Digital)

 

 

 

 

 

 

 

20

DVSS

—

 

Ground (Digital)

 

 

 

 

 

 

21

DIN

I

 

Digital audio input (Optical input)

 

 

 

 

 

22

DOUT

O

 

Digital audio output (Optical output)

 

 

 

 

 

23

ADDT

I

 

Data input from the A/D converter

 

 

 

 

 

24

DADT

O

 

Data output to the D/A converter

 

 

 

 

 

25

LRCK

O

 

LR clock output for the A/D and D/A converter (44.1 kHz)

 

 

 

 

 

26

XBCK

O

 

Bit clock output to the A/D and D/A converter (2.8224 MHz)

 

 

 

 

 

27

FS256

O

 

11.2896 MHz clock output (Not used)

 

 

 

 

 

 

28

DVDD

—

 

+3V power supply (Digital)

 

 

 

 

 

 

 

 

 

29 to 32

A03 to A00

O

 

 

 

 

 

 

 

 

 

 

 

 

 

33

A10

O

 

DRAM address output (Used : CXD2652AR, Not used : CXD2650R)

 

 

 

 

34 to 38

A04 to A08

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

39

A11

O

 

 

 

 

 

 

 

 

 

 

 

40

DVSS

—

 

Ground (Digital)

 

 

 

 

 

 

41

XOE

O

 

Output enable output for DRAM (Used : CXD2652AR, Not used : CXD2650R)

 

 

 

 

 

 

 

42

XCAS

O

 

 

 

signal output for DRAM (Used : CXD2652AR, Not used : CXD2650R)

 

CAS

 

 

 

 

 

43

A09

O

 

Address output for DRAM (Used : CXD2652AR, Not used : CXD2650R)

 

 

 

 

 

 

44

XRAS

O

 

 

 

signal output for DRAM (Used : CXD2652AR, Not used : CXD2650R)

 

RAS

 

 

 

 

 

45

XWE

O

 

Write enable signal output for DRAM (Used : CXD2652AR, Not used : CXD2650R)

* I (S) stands for Schmidt input, I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O

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Contents MDM-3GC SpecificationsVarnig Flexible Circuit Board RepairingExploded Views Table of ContentsDisassembly DiagramsSelf-Diagnosis Function SELF-DIAGNOSIS FunctionMain Board Component Side Forced ResetSection Servicing Note JIG for Checking BD Board WaveformFluorescent Display Tube Signs Retry Cause Display ModeHexadecimal nBinary Conversion Table Location of Parts and Controls Section GeneralSection Disassembly Case and Front Panel AssemblyBracket T, L and R SUB Chassis BD BoardOver Write Head Shutter AssemblySlider Complete Assembly Section Test Mode MID Operating the Continuous Playback ModeOperating the Continuous Recording Mode Non-Volatile Memory ModeTest Mode Displays Functions of Other ButtonsMeanings of Other Displays Precautions for Adjustments Section Electrical AdjustmentsPrecautions for Checking Laser Diode Emissinon Precautions for USE of Optical PICK- UP KMS-260ATemperature Compensation Offset Adjutment Laser Power AdjustmentSpecified Value Traverse Waveform Traverse AdjustmentMDS-JE320 Focus Bias AdjustmentError Rate Check Adjusting Points and Conneting PointsMain MDS-JE320 Section DiagramsBlock Diagrams Optical PICK-UP BlockREC Main SectionFor schematic diagrams For printed wiring boardsWaveform Printed Wiring Board BD Section LocationSemiconductor Schematic Diagram BD /2 See page 26 for Waveforms See page 49 for IC Block Diagrams Main Board Printed Wiring Board Main SectionSchematic Diagram Main /3 MDS-JE320 Schematic Diagram Main /3 Printed Wiring Board Display Section Display BoardEject SW Board Schematic Diagram Display Section Printed Wiring Board Switch Section Schematic Diagram Switch Section IC Block Diagrams IC121 CXD2650RBD section IC101 CXA2523R IC152 BH6511FS IC121 CXD2652ARIC307 CXD8607N IC171 XL24C01AFIC192 L88MS33T Main section IC301 LA9615IC311 LB1641 IC308 M5218AL IC309 LA5620 IC310 M5293LIC101 RF Amplifier CXA2523R Pin No Pin Name Function IC PIN FunctionsMNT3 Sloc MNT0 FOKMNT1 Shck MNT2 XbusyPin No Pin Name Function FS4 TfdrFfdr FrdrIC307 A/D, D/A converter CXD8607N Pin No Pin Name Function Lvss TEST2TEST3 LvddChuck Timer SWPower Down DaoutBUS OUT MNT2MNT3 LED0Dsel A, Dsel B DIG-RSTBeep DA-RSTMain Section Section Exploded ViewsButton Main Front Panel Section6059 Panel ASSY, Front US,CND209 208 Mechanism Deck MDM-3GC201 202 203 204 205 206 207252 253 254 259257 258 260 271 Section Electrical Parts List Inductor TC74ACT540FSInductor Chip ShortControl SW Display Eject SW Main Line Filter NJM78L06ANJM79L12A SN74HCU04ANMDS-JE320 Main

MDS-JD320 specifications

The Sony MDS-JD320 is a MiniDisc recorder that exemplifies the cutting-edge technology of the late 1990s and early 2000s. Designed for both amateur and professional audiophiles, it delivers superior sound quality and an array of features that enhance user experience and functionality. Key to its appeal is its remarkable sound reproduction capabilities, which are achieved through Sony's proprietary technologies, including the ATRAC (Adaptive Transform Acoustic Coding) compression format. This format allows for efficient audio storage without sacrificing sound fidelity, ensuring that each recording is as rich and dynamic as the original source.

One of the standout features of the MDS-JD320 is its ability to create, edit, and playback CDs and MiniDiscs with remarkable ease. Thanks to its digital optical input and output, users can connect the device to various audio sources, such as CD players or mixing boards, to make high-quality recordings. The device supports various recording modes, including long play, which enables users to extend their recording time without significant compromise on audio quality.

The MDS-JD320 also boasts a user-friendly interface, which includes an LCD display that conveniently shows essential information such as track numbers, remaining time, and recording mode. Furthermore, an intuitive remote control offers added convenience, allowing users to navigate through their music collections without having to physically interact with the device.

In terms of connectivity, the MDS-JD320 features not only digital inputs and outputs but also analog connections, making it versatile for various setups. Additionally, the device includes extensive editing features, such as track splitting, combining, and renaming, empowering users to customize their recordings easily.

Moreover, the MDS-JD320's compact design fits seamlessly into any audio setup, making it an attractive choice for both home recording enthusiasts and professionals. Its durable build quality ensures longevity, while its performance continues to impress even in today's digital audio landscape.

With its powerful combination of advanced technologies, ease of use, and high-quality audio performance, the Sony MDS-JD320 remains a sought-after component for collectors and audiophiles alike, representing an enduring legacy in the field of portable digital media solutions.
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